3 years ago

The solutions of x2=169

Mathematics

2 answers:

Gekata [30.6K]3 years ago

7 0

X=84.5 because 169/2=84.5

tresset_1 [31]3 years ago

3 0

Answer:

x=13

Step-by-step explanation:

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6x squared plus 12x plus 13 equals 2x squared plus 4

Andrews [41]

$12x^2+12x+3=2x^2+4\\\\12x^2-2x^2+12x+3-4=0\\\\10x^2+12x-1=0\\\\a=10;\ b=12;\ c=-1\\\\\Delta=12^2-4\cdot10\cdot(-1)=144+40=184\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{184}=\sqrt{4\cdot46}=2\sqrt{46}\\\\x_1=\frac{-12-2\sqrt{46}}{2\cdot10}=\frac{-6-\sqrt{46}}{10};\ x_2=\frac{-12+2\sqrt{46}}{2\cdot10}=\frac{-6+\sqrt{46}}{10}$

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3 years ago

In letters (b) leave your answer in terms of the constants a, b, c and d

Ivan

I think you mean to find b in terms of the constants a, c and d.

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(x + a) / b = c + d

Cross multily:-

x + a = b(c + d)

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4 years ago

The lifespan of a guinea pig is 6 years less than that of a giraffe. The lifespan of a tiger is 4 times that of the guinea pig.

Ronch [10]

Answer:

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Step-by-step explanation:

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Answer:20800.

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Step-by-step explanation:

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